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Henry, that is simply not true, as has been explained by several other
members of the group this week.<br>
<br>
For shielding up to 100 dB plus, and for material thickness sufficient
to be mechanically solid, there will be NO DIFFERENCE. You will be
seeing spurious responses from the filters WAY before you notice any
difference in shielding effectiveness.<br>
<br>
73, Greg, ZL3IX<br>
<br>
Henry Vredegoor wrote:
<blockquote cite="mid:001801c7d069$19f3cca0$6402a8c0@Blues" type="cite"><font
face="Arial" size="2"><span class="796030316-27072007"><br>
<div> </div>
<div><span class="796030316-27072007">............</span>The type of
metal that you specify may have an impact on a shield's performance. In
general, shielding against frequencies of 15 MHz or lower is a bulk
material effect, and can best be served by employing a ferromagnetic
metal such as steel<span class="796030316-27072007">.......</span></div>
<div><span class="796030316-27072007"></span> </div>
<div><span class="796030316-27072007"></span> </div>
<div><span class="796030316-27072007"><font face="Arial" size="2">73
's,</font></span></div>
<div><span class="796030316-27072007"></span> </div>
<div><span class="796030316-27072007"><font face="Arial" size="2">Henry.</font></span></div>
</span></font></blockquote>
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